Question about 2008 Chevrolet Uplander
I have an 2007 chevy uplander flexfuel i keep getting p1174 also i have replaced the the o2 sensors and the light keeps coming on
i belive it has something to do with the fuel injection system
Posted on Nov 04, 2011
Wade is exactly right. Check your vacuum lines first... the diagram is under the hood. All modern vehicles have at least one Oxygen sensor, some have two. Some oxygen sensors are installed on the exhaust manifold DENSO and BOSCH supply oxygen sensors for most vehicles; DENSO's are slightly better. (The O2 sensors relay mixture information back to the ECU to fine tune the fuel/air mixture within certain limits.) If your oxygen sensor(s) failed, it usually due to too many unburned fuel deposits. Have a specialist check out your fuel injectors... A Bosch Service Center has a machine to check both fuel pressure and spray pattern. If you have one bad one, change them all. A fauty EGR valve; if your engine has one, can cause a mixture problem leading to poor mixture and bad gas mileage too. Might as well do this right the first time.
Posted on Mar 12, 2015
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Sep 07, 2018 | 2005 Chevrolet Uplander
Jun 04, 2018 | 2006 Chevrolet Uplander
May 21, 2018 | 2008 Chevrolet Uplander
Feb 18, 2015 | 2005 Chevrolet Uplander
Apr 23, 2014 | 2008 Chevrolet Uplander
Sep 09, 2010 | 2006 Chevrolet Uplander
Oct 25, 2009 | 2006 Chevrolet Uplander
8,323 people viewed this question
Usually answered in minutes!